Why Processed FLY ASH?

 
Several new and important technologies are being commercialized in the areas of fly ash beneficiation and utilization to bring fly ash into conformance with current  ASTM, IS & other world standard specifications for use in concrete. As the fly ash utilization industry has matured, quality control, quality assurance, and improved product performance have incresingly become important. Technologies have been commercialized to improve and assure fly ash quality for conventional concrete applications. Also, fly ash utilization technologies have been developed to produce high performance concrete products.

Changes in boiler operations or alteration of air emissions control systems at power plants will alter the quality of fly ash produced. Factors that may impact fly ash quality in this way include:
  1. A redution in the pozzolanic reactivity caused by increased proportion of coarse particles.
  2. The presence in the fly ash of excessive Loss on ignition (LOI)
  3. Chemical residuals from post-combustion emission control

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The usage of fly ash in concrete to improve its quality and promote cost effectiveness is the target of many – Engineers, Architects, Contractors and Concrete producers.

Benefits for the Developers, Contractors & Owners

  •  Since fly ash concrete is not valunerable to deterioration as rapidly as concrete without fly ash, it ensures low maintenance buildings that will retain their value over the long-term
  • The process of construction can be expedited due to the improvement in the workability factor of the fly ash concrete. Fly ash concrete is easy to flow & hence can go long distances.
  • The presence of fly ash in the concrete mix permits a developer to experiment with newer and creative designs for his project.

Benefits for Engineers and Architects

  • Fly ash when mixed with concrete is an assurance for later-age  strength gain and high durability performance.
  • The strength that the fly ash gives to the concrete helps one to design even the thinner sections of the building flawlessly.
  • The various structures like curves, arcs, cylinders etc. can be easily made as it provides a lot of design flexibility.

For Concrete producers

  • Fly ash offers flexibility in mix desighn, providing a greater range of mixes. It also enables the producer to customize designs to each customer’s needs, thus providing the product a competitive advantage.
  • Fly ash improves the flowability and pumpability of the concrete, which translates into less wear and tear on all the producer's equipment, from batching facilities to transit vehicles and pump-lines.
  • Quality fly ash will result in a more predictable and consistent finished product. It can compensate for fines not found in some sands, thereby enhancing pumpability and concrete finishing.
 

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